No chipped teeth here, but my son had to have dental work done a few months before two. My daughter's teeth are great, like my husband's, but my son has my weak teeth. they drilled to put on a crown, drilled and drilled. And the crowns were too big to fit. After all that, they pulled it. It was hell. Now anytime we have a dentist appt., I hope for the best, but prepare for the worst.
And they always want to ask questions about his habits and snack foods. It's easier if you are strong and firm about things, too. Don't let them bully you or make you feel bad.